Examine source code of WhaleVault

{
  "name": "WhaleVault",
  "version": "0.1.51",
  "description": "Secure Graphene Cross-Chain Key Store Extension",
  "permissions": [
    "activeTab",
    "storage",
    "idle",
    "https://*/*"
  ],
  "browser_action": {
    "default_popup": "html/popup.html",
    "default_icon": "images/icons8-safe-50.png",
    "default_title": "WhaleVault :: locked"
  },
  "icons": {
    "128": "images/icons8-safe-ok-128.png"
  },
  "background": {
    "scripts": [
      "vendor/whale-1.0.0.js",
      "vendor/eosjs-api.js",
      "vendor/eosjs-jsonrpc.js",
      "vendor/eosjs-jssig.js",
      "vendor/eosjs-numeric.js",
      "js/encrypt.js",
      "js/background.js"
    ],
    "persistent": true
  },
  "web_accessible_resources": [
    "/images/icons8-safe-50.png",
    "js/whalevault.js"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://0.0.0.0:1337/*",
        "http://*/*"
      ],
      "js": [
        "vendor/jquery.js",
        "js/web_interface.js"
      ],
      "run_at": "document_start"
    }
  ],
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{5b9bee94-9e22-41d4-8dfe-0a4d50e8927d}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}